-49.95% is the change from 921 to 461
Calculation steps:
[( 461 - 921 ) ÷ 921] x 100 = -49.95%
Formula
Percentage change = [(461 - 921) / 921] x 100
Subtract the new number by the original number
461 - 921 = -460
-460 ÷ 921 = -0.499457111834962
-0.499457111834962 x 100 = -49.95%